Cities & Towns · Nagano
Nagiso Black Bear Incidents
Bear incident and sighting reports for Nagiso, compiled from official government sources, news outlets, and community submissions. View the interactive incident map and safety information before hiking or outdoor activities.
Nagiso most recently saw a black bear in Nagiso Watashima on April 2, 2026, and another adult was reported there on March 24, 2026. On March 18, 2026 near Nenoue Pass on the Nakasendo Trail, a hiker heard a bear growling and backed out of the area right away.
The heaviest activity has been around Nagiso Watashima, with other reports also coming from Ōtsumago, Tera, Azuma, and Uwadan. Sightings peaked in July 2025 with 14 reports, then stayed active in November 2025 with 10 and in October 2025 with 6, and Nagiso has logged 47 black bear sightings overall.
Nagiso Bear Incident Map
No incidents in this time range
No incidents in this time range
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Comments (1)
Five reports in just over a week from November 5th through the 12th, then nothing until late December. Did something change after that spike?
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Frequently Asked Questions About Bears in Nagiso
How many bear incidents have been recorded in Nagiso?
Nagiso has recorded 47 bear incidents in total, with 1 reported in the last 30 days and 0 in the last 7 days. These reports are compiled from official government sources, news outlets, and community submissions, and can be viewed on the incident map.
When and where was the latest bear incident in Nagiso?
The most recent bear sighting in Nagiso was on March 4, 2026 in Nagiso Ōtsumago, Nagano, where 1 Black Bear was reported. Detailed location and surrounding incidents are available on the incident map.
Where have bears appeared recently in Nagiso?
Recent bear sightings in Nagiso have been concentrated in Nagiso Watashima (14), Nagiso Ōtsumago (4), Nagiso Tera (4). These areas have had multiple reports within the last 30 days.
Is bear activity increasing in Nagiso?
Activity has slowed. 0 incidents in the last 7 days, 1 in the last 30 days.
What type of bears are in Nagiso?
Nagiso is home to Asian black bears, which weigh up to 120kg and inhabit the mountains of Honshu and Shikoku. They are generally shy but can be dangerous when surprised or protecting cubs. Carry bear bells while hiking.